A woman shot and killed at an auto parts store in Eustis had contacted police just Monday about a man she said was stalking her.

Deputies shot and killed the suspect, identified as 57-year-old Gilberto Roman Rivera, after they say he shot two auto parts employees, killing one and critically injuring the other.

Investigators have many questions to answer after what happened early Wednesday morning.

Why did deputies shoot the suspect? What happened inside this store? And how long had the man been allegedly stalking and threatening the employee?

“I just went in there and somebody went in and robbed the place and shot the girl in there,” a caller told a 911 dispatcher.

A Eustis Advance Discount Auto Parts customer logically thought it was a robbery when he found two female employees shot, one of them dead inside.

Monday, 54-year-old Rose Nelson called police to say a customer, who wanted a relationship with her, tried to carjack her in the store parking lot.

“He looked her in the eyes, then he jumped out the car and ran but he told her it wasn't over with,” said Nelson’s sister, Rosemary Gillard.

“They were working to get him positively identified, she knew him only by his first name,” said Sgt. Jim Vachon, with the Lake County Sheriff’s Office.

At the Greater Zion Hill Missionary Baptist Church, where Nelson was a devoted member, the regular Wednesday night Bible study meeting was a evening of prayer.

"She was here every Wednesday, evertime we were open, she was here, sang on the praise team, anything we needed her to do, she was ready to do it. We needed somebody to volunteer for something, she was Johnny-on-the-spot," said Rev. Dennis Hagins.

Church members said the Rivera left flowers for her on Sunday.

She was supposed to go down to the police department Wednesday morning, but family said she switched her schedule at work hoping to avoid the man, and told police she'd come by in the afternoon instead.

"They were pretty sure they had the suspect identified, but without her saying for a fact 'this is the man,' they really coudn't go any further than that," said Sgt. Vachon.

She was shot and killed inside the store just after 8 a.m.

Lake County Sheriff's dogs tracked Rivera down to a wooded area behind the store.

“There was a confrontation of some kind and our deputies were forced to use deadly force,” said Vachon.

His death was no solace for the family, most saying they knew little about the man and why he was apparently so obsessed with Nelson that he decided to kill her.

“I've been trying to figure that out myself, I can't figure out why somebody would try to hurt her, I know she's my daughter and I know she's a sweet person,” said Nelson’s mother, Mary Armstron.

“She didn't deserve what she got,” said Armstrong.

The other employee shot in the store, Trena Hindson Perkins, was airlifted to Orlando Regional Medical Center in critical condition.

The Florida Department of Law Enforcement is investigating Rivera's shooting death.

Authorities said they were trying to identify the man Nelson said was stalking her and added he would definitely have been brought in for questioning.